Pro-rata holiday calculator
“Pro-rata” just means in proportion. A part-timer gets the same 5.6 weeks as a full-timer — a week simply contains fewer of their working days. Starting or leaving mid-year scales the annual figure by the fraction of the leave year you're employed.
The pro-rata rule
2026/27days per week × 5.6 × months employed ÷ 12
Employers normally round a starter's figure up to the nearest half day (gov.uk practice); it can't be rounded down below the statutory amount.
Worked examples
| Pattern | Period | Entitlement |
|---|---|---|
| 3 days/week | full year | 16.8 days |
| 2 days/week | full year | 11.2 days |
| 5 days/week | 6 months | 14 days |
| 4 days/week | 9 months | 16.8 days |
| 2.5 days/week | full year | 14 days |
The same proportion applies to contractual extras: if the full-time deal is 33 days including bank holidays, a 3-day-a-week colleague gets 33 × 3/5 = 19.8. For how the 8 bank holidays are shared fairly, see the bank-holiday pro-rata page.
Common questions
How do I pro-rata holiday for a new starter?
Do part-timers get paid the same for a day's holiday?
What about compressed hours — full-time in 4 days?
My hours vary every week — can I still use this?
Sources for the figures on this page
Last checked 3 July 2026How we keep these current: methodology & update policy.